nRF52840 AT Command USB Dongle MDBT50Q-RX-ATM

To have an easy understanding of Raytac’s AT Command USB Dongle, here provides the command table for reader’s easy reference.

We encourage readers to visit Raytac’s website to obtain the detail information

MDBT50Q-RX-ATM

MDBT50Q-RX-ATM-1.jpg

Raytac AT command is built based on Nordic UART service, aka NUS, which is similar to SPP (Serial Port Profile) applied in Classic Bluetooth (BT2 and BT3)

To service the Bluetooth bridging works, AT command modules or dongle comes with both Central/Master & Peripheral/ Slave role available.

Latest released MDBT50Q-RX-ATM is a USB dongle designated to connect to PC or Machine acted as the Central / Mater role supporting below commands.

List of supported commands

  • Setting of scanned device name
  • Setting of scanned base UUID/service UUID/TX character/RX character
  • Setting of scanned RSSI threshold
  • Selective data rate of 1M bps, 2M bps or 125K bps on-air
  • Set TX output power in 6 levels.
  • Set scanning time
  • Enable/disable scanning
  • Set LED pattern indicating scanning or connecting status
  • Auto UART baud rates
  • Use external 32.768KHz oscillator
  • Recover-to-default setting with software method
  • System reset of software
  • Set serial number and retrieve
  • Retrieve MAC Address
  • Support maximum MTU 247bytes / data payload up to maximum 244 bytes

MDBT50Q-RX-ATM-2 Command Table.jpg

Raytac Corporation 勁達國際電子有限公司

A BT5 & BT 4.2 & BTv4.1 module maker based on Nordic nRF51 & nRF52 solution

(nRF51822 & nRF52832 & nRF52810 & nRF52811 & nRF52840)

www.raytac.com email: cs@raytac.com Tel: +886.2.3234.0208

 

Raytac Central Role AT Command USB Dongle MDBT50Q-RX-ATM Released

Raytac today announced (Central / Master) AT command dongle released.

Part No.:

MDBT50Q-RX-ATM

Raytac AT Command Module Family

nRF52840 is Nordic’s latest and advanced solution, which brings a new interface “USB” from other lines, has drawn the attention among developers. 


Raytac developed AT Command  (Master / Central ) solution based on nRF52840 solution, fulfilled the demand of USB interface, missioned to deliver a full coverage of AT Command product line.


Raytac’s nRF52840 USB AT Command dongle, MDBT50Q-RX-ATM is a BT5, FCC/IC/CE/Telec/KC/SRRC/NCC/RCM/WPC pre-certified dongle which is  eliminating the need for RF design expertise, and speeding time to market for complex M2M IoT applications. 


AT command module is an easy solution provides developers a quick breakthrough to Bluetooth connection. Without firmware effort needed, simply have commands setting on MCU and the start to enjoy the implement of bridging connectivity between devices through Bluetooth.

After Raytac’s completed both Central (Master) & Peripheral (Salve) role AT command module projects, the USB interface has brought up the strongest demand by developers.

Raytac Corporation 勁達國際電子有限公司
A BT5 & BT 4.2 & BTv4.1 module maker based on Nordic nRF51 & nRF52 solution
(nRF51822 & nRF51422 & nRF52832 & nRF52810 & & nRF52811 &nRF52840)
www.raytac.com email: cs@raytac.com Tel: +886.2.3234.0208

 

Burn your firmware – onto MDBT50Q-RX that is

Hi there, folks!
So you have hopefully downloaded your IDE, you have written your code which you then plan to copy it over onto your MDBT50Q-RX and make it execute your master plan to take over the world!
Seriously, don’t underestimate the Nordic nRF52840 based MDBT50Q-RX. USB sticks with Bluetooth can do wonders 😉
(I am serious! Just look at Plezmo! You see that USB stick? Yep, that’s another Raytac for ya)So, first of all, in order to be able to burn your code onto the USB Dongle, you will have to know the nerdy parts which includes which pins you will have to connect to. In our very well documented specification sheet for MDBT50Q-RX on section 8 which is called “Reference Circuit”, you will find parts down to the left that has “3.3V/SWDIO/SWCLK/GND” marks on it:
Burning pins on MDBT50Q-RX

Further down in the specification sheet, in section 9, you will find pictures illustrating where exactly on the PCB you can find these pins:
Pin locations

Now we know what to look for and where they are, so now we have only got to tell you how to use them.

Some people might not know this, but for developing these things, you need to get something called J-Link to connect your MDBT50Q-RX to your desktop. However, since this J-Link, when buying the official one from SEGGER, is very expensive, we strongly recommend you to just buy the nRF52840-DK from Nordic Semiconductor as it can be used as a J-Link through their software development kit (SDK) called nRFgo Studio and is MUCH CHEAPER than the official J-Link from SEGGER is.
Sidenote: There are a couple of other reasons why you should just get your hands on a nRF52840-DK from Nordic Semiconductor instead of getting a SEGGER J-Link, but that’s not the topic of this post 😉

When this is done, this is finally how you connect your MDBT50Q-RX to your J-Link to make it all work:

MDBT50Q-RX and J-Link connection

Here you will have to pay attention to the fact that you have to connect J-Link pins 3, 5 & 9 to GND. Otherwise, you won’t be able to burn anything onto your dear MDBT50Q-RX.
The physical connection should look like this:

J-Link Cable Connection

Pay attention to the direction of the cable, because that will also matter. The direction we mean in this case is which way the slim strip of red is facing.

As we have just revised our MDBT50Q-RX, our customers who have been developing firmware for our USB dongle should take a look at our previous blog post in which we explain about the changes made or contact us directly at service@raytac.com

Have a good day and we at Raytac wish you smooth and happy tinkering 🙂

Raytac Corporation 勁達國際電子有限公司
A BT5 & BT 4.2 & BTv4.1 module maker based on Nordic nRF51 & nRF52 solution
(nRF51822 & nRF51422 & nRF52832 & nRF52810 & nRF52840)
www.raytac.com email: cs@raytac.com Tel: +886.2.3234.0208

 

Raytac Product Change Notice (PCN) Announcement for nRF52840 Dongle: MDBT50Q-RX

Dear Customers,

To enable hardware reset function in Raytac’s nRF52840 dongle (P/N: MDBT50Q-RX), Raytac’s has revised the circuit and issued the PCN accordingly.


Description of the Change:

1. Change circuit design to enable the hardware reset function.
2. Change PCB Imprint
3. Change Label
4. Change Part No.

Here provided the content of the PCN for customer’s reference.

PCN-19031801-1
PCN-19031801-2

Customers who have been developing firmware based on pervious dongle, please contact with service@raytac.com to request the latest sample version for evaluation.
Raytac Corporation 勁達國際電子有限公司
A BT5 & BT 4.2 & BTv4.1 module maker based on Nordic nRF51 & nRF52 solution
(nRF51822 & nRF51422 & nRF52832 & nRF52810 & nRF52840)
www.raytac.com email: cs@raytac.com Tel: +886.2.3234.0208